Some of the "better at planning" poor people have built up crude math to make it all makes sense, but seems overly complicated for someone like me. The one I noticed: "oh, I got $85 for selling that pot I made, I'll use that for the fridge repair." - Which is totally different to "oh I got $85, I'll just put it in the pool of my bank balance because I already budgeted for that fridge repair which costs $60". I tried asking this person, but you also needed an extra $10 for that McDonald's lunch you wanted to buy but they insisted "nope, that's my fridge-repair money, can't spend that"
Not sure I'm explaining that properly, but it was the sort of math I encountered dealing with such individuals.